sig2dot GPG/PGP Keyring Graph Generator

sig2dot.pl can be used to generate a graph of all of the
signature relationships in a GPG/PGP keyring, like those
resulting from keysigning
parties, or the
Debian Keyring (of all Debian developers). It converts
the output of "gpg --list-sigs" to a .dot file, which is a
graph definition that can be rendered by springgraph or graphviz.
sig2dot is released under the GPL.

"Nothing gets people's interest peaked like colorful
graphics. Therefor, graphing the web of trust in your local
area as you build it can help motivate people to
participate as well as giving everyone a clear sense of
what's being accomplished as things progress."